Swivel pipe-joint.



.A. G. ELVlN & F. W. MARTIN.

SWIVEL PIPE JOINT.

APPLICATION FILED JULY 30. I913.

1,171,416. Patented Feb 15, 516.

NVVE'N ons Mimi; I I @fi-M 5 l STAT S A F I I aLBEn'r c. EnvIN, orSOMEEVILLE, NEW JERSEY, AND FREDERICK WJMARTIN, or

- Be it known that we, ALBERT NEw YORK, N. Y ASSIGNORS, BY DIRECT ANDMESNE ASSIGNMENTS, T FRANKLIN RAILWAY SUPPLY COMPANY, OLE WIIQMINGTON,DELAWARE, A CORPORATION OF DELAWARE.

sw'rvEL rIrEJoINT.

application filed July. so, 1913. Serial No. 781,941.

To all whom it may comm.-

andFREDERICK W. MARTIN, both citizens of the 'United- States, andresidents,- respectively, of Somerville, in the county of Soul erset andState'of New Jersey, andthe b0r-. ough of Manhattan, in-the city,county, and

- State of New York, have invented a certain new and useful -Improvementin Swivel Pipe-Joints, of which improvement the vfollowing is' aspecification.

This invention relates to joints'btwen two pipe sections having a.swivel movement- 'relative to each other, the object being to provide animproved joint of this character which shall havea minimumamount offriction between the parts, and at, the same time maintain a fluid-tightjoint.

' The improvement claimed is herelnafter In' the accompanying drawings:Figure 1 is a central longitudinal'section of a pipe -''joint, embodyingour improvement; and

' Fig. 2, a similar section showing a slight modification.

According. to "the construction shownfin Fig. 1, theswivel jointcomprises a body pore tion, 1, preferably in the'form of an openendedcylinder having a shoulder, 2, at theinner end, and a'sleeve memberformed with.

' an intermediate cy-lidrical portion, 3, fitting the cylindrical body,inner and outer cylin-- drical'portions, 5, and 11, and tapered shoulde'rs, 14, and 9,-respectively, connecting said j 85 inner and outerportions with the intermediate cylindrical portion; A packing ring,

a 6-, of suitable material. is located between thesleeve,-5, and thebody portion, the outer "end being'tapered and the innercnd beingcutiaway to vform a'.cavity in which is located. the coiled spring, 8,hearing at one end upon-the shou1der, 2, and acting to force the taperedend of the-packing ring out between thetaper'ed shoulder, 4, of'thesleeve,

and the wallloi the body. The fluid pres- Letters Patent isporti0n,,-11, and tapered shoulder, 9, the gland nut, 12, being screweddown upon the ga-sket, and the end of the body. The pressure of the nutupon the gasket forces the tapered Specification of Letters atent.Patented 1 5, 191(1v G. ,the upper end of the body and the sleeve endportion between the tapered shoulden l .of-the sleeve, and the wall ofthe body, and thus, tends to hold the sleeve central in the fjoint. I-Tl 1is gasketis preferably formed of 'ant1 fr1ct1onmetal which. reducesthe frictionbetween the sleeve and nut, and allows the joint to operatevery easily when fluid .undcr 'line.'

The construction shown in Fig. 2-is sub stantially the same except thatthe cut away pressure is admitted into the pipe portion or cavity at theinner end of the packlng ring, 6, is V-shaped in section, so

that the fluid pressure entering said cavity acts to press the lipsofthe packing ringboth outward against the-surface of the body as Wellas .inwardagainst the sleeve and against the tapered shoulder.

In either construction, the packing ring mum.

'maintains a durable fluidtight joint,- and :thei gasketiienter'sf'tzh'esleeve in position and" 'reducesthe frictionpf the joint to;a-min1- Thepacking ring may readily be renewed i at such times as may be necessary,by sim- -p y-unscrew1ng the nut,- and removing the sleeve from the body.f Having now we claim asnew *1. In a swivel'pipe joint, 'theco nbinationshoulder and a smaller cylindrical portion,

and a tapered packin ring engaging said s5 describedour invention,.wha tand desire to secure by shoulder, the 'wall -0 the body andthe smallerportion of the sleeve, and -provided with a. cavity of a cylindricalbody section, a sleevefitted' therein and havin an inner tapered shoulat its inner end subject to thefluld 'pressure.

der and an outer tapered shoulden a tapered,

packing ringengaging the nner shoulder and the wall of the body sectionand provided with a cavity subject, to the fluid presrv sure, a gasketengaging" the'f'outertapered shoulder-[and the inner surface of thewall,

ios

and a nut on said body for holding said gasket. I

3, In a swivel pipe joint, the combination of a cylindrical bodysection, a cylindrical sleeve fitted therein and having a taperedshoulder, a tapered packing ring engaging said shoulder and the wall ofthebody'section, and provided with a cavity at its 1nner end, and ametal spring ring lining the inner portion of the packing ring forpressing the same against the wall of the body packing ring engaging theinner shoulder and the wall of the body section, a spring bearingagainst said packing ring, a soft metal gasket engaging the outertapered 20 shoulder and the inner surface of the wall.

of the body, and a nut for holding the gas- 'ket against the outertapered shoulder of said sleeve.

In testimony whereof we have hereunto 25 set our hands. v

ALBERT G. ELVIN. FREDERICK MARTIN.

Witnesses: JOHN L. MOHUN, A. I. DONNELLEY.

